Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 939 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 How many watts (W) is 1.2 kW?
2. 2.📏 How many amperes (A) is 660 mA? =
3. 3.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
4. 4.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
5. 5.📏 How many milliamperes (mA) is 2.58 A?
6. 6.📏 How many watts (W) is 2.6 kW?
7. 7.📏 How many ohms (Ω) is 2.7 kΩ?
8. 8.📏 How many amperes (A) is 1020 mA? =
9. 9.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
11. 11.📏 How many amperes (A) is 2360 mA? =
12. 12.True or false: resistance is measured in watts (W). (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
17. 17.📏 How many milliamperes (mA) is 0.45 A?
18. 18.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.📏 How many watts (W) is 4.5 kW?
20. 20.📏 How many kilowatts (kW) is 3450 W? =
21. 21.True or false: resistance is measured in ohms (Ω). (a) False (b) True
22. 22.📏 How many kilowatts (kW) is 3150 W? =
23. 23.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) the push of a cell (d) current
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
25. 25.📏 How many watts (W) is 4.3 kW?
26. 26.True or false: the ammeter is joined in series. (a) True (b) False
27. 27.📏 How many amperes (A) is 1480 mA? =
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
30. 30.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) energy used each second (d) power
31. 31.📏 How many kilowatts (kW) is 300 W? =
32. 32.True or false: the voltmeter measures current. (a) False (b) True
33. 33.True or false: the push of a cell is measured in watts (W). (a) True (b) False
34. 34.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) voltage (d) the flow of charge
36. 36.📏 How many ohms (Ω) is 7 kΩ?
37. 37.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) energy used each second (d) voltage
38. 38.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
39. 39.True or false: the ammeter measures voltage. (a) True (b) False
40. 40.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)

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